Abstract: This application discloses a secondary battery and an electric apparatus. The secondary battery includes a positive electrode plate, a negative electrode plate, an electrolyte, and a separator sandwiched between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode active material. The positive electrode active material includes LiFexM(1-x)PO4, where 0<x<1, and M includes at least one of Co, Mn, Ni, Mg, Zn, or Al. The electrolyte includes a lithium salt represented by the following formula (I). The secondary battery meets condition (aa), where C is a mass percentage of the lithium salt in the electrolyte, U is an upper-limit usage voltage of the secondary battery, and U0 is a stable voltage of the lithium salt.

Abstract: An electrolyte includes a first additive having a chemical formula of R((CH3)mSi)n, where R includes at least one of phosphate ester group, phosphite group, borate group, amine group, isocyanate group, fluorine atoms, oxygen atoms, and sulfur atoms, m is 1, 2, or 3, and n is 1, 2, or 3.

Abstract: Provided are a secondary battery and a method of preparing the secondary battery. The secondary battery includes a positive electrode plate and an electrolytic solution, wherein the positive electrode plate includes a positive electrode current collector and a positive electrode film layer provided on at least one surface of the positive electrode current collector, the positive electrode film layer has a porosity of P, the electrolytic solution includes a dehydrating additive, and based on a total mass of the electrolytic solution, a mass percentage of the dehydrating additive in the electrolytic solution is a, and the secondary battery satisfies: 0.2?(a*100)/P?3.5. The secondary battery of the present application has improved initial direct current resistance (DCR) and high temperature cycle performance while having an improved porosity to balance high energy density and good dynamics.

Abstract: The present disclosure relates to a lithium-ion battery including a first electrolytic solution and a second electrolytic solution. The first electrolytic solution and the second electrolytic solution satisfies 0.1?[(d2×t2)/(d1×t1)]?11, where d1 is a mass of the first electrolytic solution, d2 is a mass of the second electrolytic solution, t1 is a ratio of a mass of an additive of the first electrolytic solution to a mass of the first electrolytic solution, and t2 is a ratio of a mass of an additive of the second electrolytic solution to a mass of the second electrolytic solution.

Abstract: An air conditioning control device includes a control unit, a skin temperature measurement unit, an information acquisition unit, and a determination unit. The control unit controls an air conditioner that performs air conditioning of a room where a user is present. The skin temperature measurement unit measures a skin temperature of the user. The information acquisition unit acquires thermal sensation information of the user regarding the space where the user is present. The determination unit determines a comfortable skin temperature range in which the user feels comfortable, based on a skin temperature of the user obtained at the time of acquiring of the thermal sensation information. The control unit controls the air conditioner based on the comfortable skin temperature range determined by the determination unit.

Abstract: The present invention discloses a system and control method of all-DC power supply and storage for a building. The system includes a renewable energy power generation apparatus, a mains grid system, a first DC/DC conversion apparatus, an AC/DC conversion apparatus, a first voltage DC bus, a first energy storage apparatus, and a first charge-discharge conversion apparatus. The first DC/DC conversion apparatus is configured to convert DC voltage generated by the renewable energy power generation apparatus to voltage of the first voltage DC bus. The AC/DC conversion apparatus is configured to convert AC power from the mains grid system to DC power. The first charge-discharge conversion apparatus is configured to control charge/discharge of the first energy storage apparatus. The first voltage DC bus is connected to a first electrical device and configured to power the first electrical device.

Abstract: The present invention discloses a system and control method of all-DC power supply and storage for a building. The system includes a renewable energy power generation apparatus, a mains grid system, a first DC/DC conversion apparatus, an AC/DC conversion apparatus, a first voltage DC bus, a first energy storage apparatus, and a first charge-discharge conversion apparatus. The first DC/DC conversion apparatus is configured to convert DC voltage generated by the renewable energy power generation apparatus to voltage of the first voltage DC bus. The AC/DC conversion apparatus is configured to convert AC power from the mains grid system to DC power. The first charge-discharge conversion apparatus is configured to control charge/discharge of the first energy storage apparatus. The first voltage DC bus is connected to a first electrical device and configured to power the first electrical device.

Abstract: An air conditioning control device includes a control unit, a skin temperature measurement unit, an information acquisition unit, and a determination unit. The control unit controls an air conditioner that performs air conditioning of a room where a user is present. The skin temperature measurement unit measures a skin temperature of the user. The information acquisition unit acquires thermal sensation information of the user regarding the space where the user is present. The determination unit determines a comfortable skin temperature range in which the user feels comfortable, based on a skin temperature of the user obtained at the time of acquiring of the thermal sensation information. The control unit controls the air conditioner based on the comfortable skin temperature range determined by the determination unit.

Abstract: A method of conditioning an environment includes generating, by a group feedback analysis system, a first comfort limit based on a first plurality of data points corresponding to user feedback of a group of users in an environment conditioned by an environmental conditioning system to identify the first comfort limit at a first extreme; generating, by the group feedback analysis system, a second comfort limit based on a second plurality of data points corresponding to user feedback of the group of users in the environment conditioned by the environmental conditioning system to identify the second comfort limit at a second extreme, the second extreme being opposite the first extreme; identifying, by the group feedback analysis system, a comfort region defined by the first comfort limit and the second comfort limit; and controlling the environmental conditioning system to maintain at least one environmental criterion within the comfort region.

Abstract: A method of conditioning an environment includes generating, by a group feedback analysis system, a first comfort limit based on a first plurality of data points corresponding to user feedback of a group of users in an environment conditioned by an environmental conditioning system to identify the first comfort limit at a first extreme; generating, by the group feedback analysis system, a second comfort limit based on a second plurality of data points corresponding to user feedback of the group of users in the environment conditioned by the environmental conditioning system to identify the second comfort limit at a second extreme, the second extreme being opposite the first extreme; identifying, by the group feedback analysis system, a comfort region defined by the first comfort limit and the second comfort limit; and controlling the environmental conditioning system to maintain at least one environmental criterion within the comfort region.